The Esophagus

question 145

Multiple Choice

The esophagus

• A) extends from the fauces to the stomach.
• B) has cartilage in its walls to keep it from collapsing.
• C) produces two enzymes that digest proteins.
• D) has upper and lower sphincters to regulate movement of food.
• E) has thin walls of connective tissue.

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Definitions:

Judgmental Sampling

A non-random sampling technique where the researcher selects units to be sampled based on their knowledge and professional judgment.

Network Sampling

A method of sample selection used in research that involves choosing participants through networks or connections within a specific population.

Stratified Random Sampling

Sampling in which randomly selected units from small or minority populations are forced into the sample to ensure that they are represented in proportion to their presence in the population.

Purposive Sampling

A non-random sampling technique in which the researcher selects participants based on specific characteristics or qualities.